Navigation Links
550 million years ago rise in oxygen drove evolution of animal life
Date:12/17/2010

Researchers funded by the Biotechnology and Biological Sciences Research Council (BBSRC) at the University of Oxford have uncovered a clue that may help to explain why the earliest evidence of complex multicellular animal life appears around 550 million years ago, when atmospheric oxygen levels on the planet rose sharply from 3% to their modern day level of 21%.

The team, led by Professor Chris Schofield, has found that humans share a method of sensing oxygen with the world's simplest known living animal - Trichoplax adhaerens - suggesting the method has been around since the first animals emerged around 550 million years ago.

This discovery, published today (17 December) in the January 2011 edition of EMBO Reports, throws light on how humans sense oxygen and how oxygen levels drove the very earliest stages of animal evolution.

Professor Schofield said "It's absolutely necessary for any multicellular organism to have a sufficient supply of oxygen to almost every cell and so the atmospheric rise in oxygen made it possible for multicellular organisms to exist.

"But there was still a very different physiological challenge for these organisms than for the more evolutionarily ancient single-celled organisms such as bacteria. Being multicelluar means oxygen has to get to cells not on the surface of the organism. We think this is what drove the ancesters of Trichoplax adhaerens to develop a system to sense a lack of oxygen in any cell and then do something about it."

The oxygen sensing process enables animals to survive better at low oxygen levels, or 'hypoxia'. In humans this system responds to hypoxia, such as is caused by high altitudes or physical exertion, and is very important for the prevention of stroke and heart attacks as well as some types of cancer.

Trichoplax adhaerens is a tiny seawater organism that lacks any organs and has only five types of cells, giving it the appearance of an amoeba. By a
'/>"/>

Contact: Nancy Mendoza
press.office@bbsrc.ac.uk
0044-179-341-3355
Biotechnology and Biological Sciences Research Council
Source:Eurekalert

Page: 1 2

Related biology news :

1. Team awarded $7.5 million to identify potential drug candidates to treat nicotine addiction
2. CIC to Raise $2.2 Million in Financing and Announces Changes in Management
3. NIH awards $6.4 million to Case Western Reserve School of Medicine researchers
4. $5.1 million Army-Md. alliance speeds university research to market
5. $4.3 million DARPA grant enables development of biological and chemical threat detector
6. MU plant genome research receives $3 million boost from National Science Foundation
7. Up to 20 million euros for Munich Catalysis research cooperation
8. Researcher explores the evolution of largest mammals over the past 100 million years
9. $1.6 million to take forward breakthrough research in heart disease
10. NIH awards $10 million to advance microneedle patch for flu vaccination
11. Aeras awarded €11.7 million ($16 million) grant from Dutch government
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/21/2014)... areas across Riau province on Sunday, July 20, indicating ... decline in rainfall. The number of detected hotspots ... been reported one day prior, which had reached only ... regencies and municipalities, most of which were in northern ... creates could potentially spread via winds to Malaysia and ...
(Date:7/21/2014)... process that uses extracts from seeds of Moringa oleifa ... by 90% to 99%. The hardy trees that are ... Africa, Asia, and Latin America. , The protocol, which ... review, is low-cost and efficient, making it especially ... countries who are presently drinking highly turbid and contaminated ...
(Date:7/21/2014)... reveals that mesenchymal (mezz-EN-chem-uhl) stem cells (MSCs) help rejuvenate ... MSCs into mouse leg muscles prior to several bouts ... during resistance training in humans that result in mild ... of repair and enhance the growth and strength of ... findings, described in the journal Medicine and Science ...
Breaking Biology News(10 mins):Stem cells aid muscle repair and strengthening after resistance exercise 2
... activated when we choose to suppress an emotion, compared to ... new study from the UCL Institute of Cognitive Neuroscience and ... Brain Structure and Function , the researchers scanned the brains ... activated when choosing for oneself to suppress an emotion. They ...
... among a national group of 87 newly elected fellows ... Tweten, OU Health Sciences Center in Oklahoma City, and ... highly-selective, peer-review process, based on their records of scientific ... Tweten, George Lynn Cross Research Professor in the Department ...
... that R. Graham Cooks, the Henry Bohn Hass Distinguished ... of the 2013 Dreyfus Prize in the Chemical Sciences, ... awarded biennially, consists of $250,000, a citation, and a ... University in the fall and will feature a lecture ...
Cached Biology News:Study finds brain system for emotional self-control 2OU microbiologists elected as fellows in the American Academy of Microbiology 2R. Graham Cooks wins Dreyfus Prize in the Chemical Sciences 2
(Date:7/22/2014)... 22, 2014  United Therapeutics Corporation (NASDAQ: ... release its second quarter 2014 financial results before ... United Therapeutics will host a half-hour teleconference ... Eastern Time.  The teleconference is accessible by dialing ... of the teleconference will be available for one ...
(Date:7/22/2014)... (PRWEB) July 22, 2014 Biofeedback ... hyperactivity disorder (ADHD) is diagnosed, selecting medication to best ... error. Analyzing brain patterns by using electroencephalography (EEG) can ... and thus lower the risk of adverse drug events. ... and Biomarkers” in the current issue of the ...
(Date:7/21/2014)... Lawrence Livermore National Laboratory ... Las Positas College (LPC) recently established a 24-month ... training for veterans, officials recently announced. , The ... is designed to help veterans develop the ... and establishes a pipeline of qualified candidates for ...
(Date:7/21/2014)... of Arts and Sciences has received a major ... , Mathew M. Maye, associate professor of chemistry, ... the National Science Foundation (NSF). The award supports ... the results of which may impact gas storage, ... , Maye,s approach is novel, in that he ...
Breaking Biology Technology:Analyzing Brain Patterns with EEG Can Help Predict Effective Use of Medication 2Analyzing Brain Patterns with EEG Can Help Predict Effective Use of Medication 3Engineering Program Established for Veterans 2Engineering Program Established for Veterans 3Syracuse University chemist to use NSF grant to study materials chemistry, nanoscience 2
... Feb. 19 NeurogesX, Inc.,(Nasdaq: NGSX ), ... therapies, announced today that it is scheduled to ... Growth Stock Conference in,Laguna Niguel, CA on February ... will be presenting and Stephen Ghiglieri, Chief,Financial Officer, ...
... BEIJING, Feb. 19 /Xinhua-PRNewswire/ -- Sinovac Biotech Ltd. (Amex:,SVA), ... it,will hold its 2007 Annual Meeting of Shareholders on ... meeting will be held concurrently at,No. 39 Shangdi Xi ... Temple,Street, St. John,s, Antigua. All shareholders of record as ...
... Pharmion Corporation,(Nasdaq: PHRM ) today reported financial ... For the year, net sales totaled $267.3 million,compared to ... of,Vidaza(R) (azacitidine for injection) totaled $165.3 million for 2007,compared ... of Vidaza totaled,$131.4 million in 2007, compared to $130.6 ...
Cached Biology Technology:NeurogesX to Present at Roth 2008 OC Growth Stock Conference 2NeurogesX to Present at Roth 2008 OC Growth Stock Conference 3Sinovac Biotech Ltd. Schedules 2007 Annual Meeting of Shareholders 2Pharmion Corporation Announces 2007 Operating Results 2Pharmion Corporation Announces 2007 Operating Results 3Pharmion Corporation Announces 2007 Operating Results 4Pharmion Corporation Announces 2007 Operating Results 5Pharmion Corporation Announces 2007 Operating Results 6
Form: Ready to use Applications: ELISA...
Form: Ready to use Applications: ELISA...
ANTI S. GROUP AG:H...
Recorder REC-111 single-channel, 1. Category: Chromatography Systems & Accessories, Systems....
Biology Products: